25kg high quality Pp kraft paper valve bag for packing food

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1.Pp kraft paper bag is eco-friendly
2.Best quality, one by one inspecti
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Competitive price with excellent quality

Q: Express carton packaging, plastic packaging should be how to deal with?: Express packaging bags can be used as garbage bags, now online shopping people, in addition to vegetables, fruits this difficult to preserve things, a considerable portion of daily necessities are purchased from the internet. However, the excessive packaging of online shopping packages once troubled people. "Online shopping, a clothing is generally at least two layers of packaging, and the first is the clothes factory comes with transparent plastic bags, and there is a layer of express bags attached to the courier."." Some time ago, "double 11", a friend bought three clothes and a set of speakers, these days have gradually arrived, and summed up a total of eight large plastic bags and two cartons.

Q: What is the material of detergent bag?: Most of these bags are made of PP, PE, OPP, BOPP plastic raw materials. In general, families rarely recycle, just waste or garbage.

Q: What is the material for edible fungus stick packing bag?: HDPE bags, which are not high temperature resistant, can be sterilized at 104 degrees. Over this temperature, the contamination rate of pathogens will be increased.

Q: Do vacuum packing bags have to be vacuum packed?: Vacuum packaging bags and vacuum packaging machines are related. Vacuum packaging machine not only can complete vacuum extraction, but also can complete heat sealing packaging in vacuum, and ensure vacuum in vacuum bag can meet the requirement.

Q: What's the raw material of the cement packing bag?: Plastic recycling machine is the role of the crushed cleaning waste polypropylene, polyethylene block, sheet, pipe, bottle, film, weaving, silk, pressurized heated in the machine, drawing into strips, the cutter into granular for other plastic processing machinery use.

Q: What is the difference between LDPE and PE-LD in a package?: LDPE is low density polyethylene, and PE-LD should be low density polyethylene. Because according to the PE classification, LDPE (low density polyethylene), MDPE (medium density polyethylene), HDPE (high density polyethylene), VLDPE (low density polyethylene), LLDPE (linear low density polyethylene (mPE), metallocene PE). See, "LD" means "low density".

Q: What are the requirements of the gas in the package?: For example, some fruits, vegetables, air conditioning packaging, as well as cold meat also have the atmosphere of the tune (20% carbon dioxide, 80% oxygen), low temperature, preservation for about a week, to maintain fresh meat color, prevent browning!

Q: Is the color of cement packing bags related to cement?: Portland ash cement, fly ash, silicate sleep and composite Portland cement -- black or blue.The cement packing bags shall clearly indicate the standards of implementation, cement varieties, codes, strength levels, producers' names, production licence marks (QS) and serial numbers, serial numbers, date of packing and net contents.

Q: What are the common materials of tea packing bags?: Metal cans for the advantages of extrusion resistance, good texture, early mainly with PE bag packaging for tea packaging, but because the price is high, and easy to corrosion and rust deformation, has been gradually phased out. The metal cans within the paint smell and cover mouth closed enough should not be used alone.

Q: How about the material difference of food packaging bag?: The main contents of food packaging bags are: PVDC (poly partial two vinyl chloride), PE (polyethylene), PA (nylon), EVOH (ethylene / vinyl alcohol copolymer), aluminum film (aluminum +PE), etc.All kinds of materials have different properties and different uses. Generally, food packaging bags are not single materials, and they are usually multilayer compositeThe sausage casing is a single material, PVDC

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